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"Extinct Galaxies" --Astronomers Discover Hidden Quasars the Culprit

 

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Some of the biggest galaxies in the universe are full of extinguished stars. But nearly 12 billion years ago, soon after the universe first was created, these massive galaxies were hotspots that brewed up stars by the billions. How these types of cosmic realms, called dusty starburst galaxies, became galactic dead zones is an enduring mystery. Astronomers at the University of Iowa, in a new study published in the Astrophysical Journal, offer a clue. They say quasars, powerful energy sources believed to dwell at the heart of galaxies, may be responsible for why some dusty starburst galaxies ceased making stars.

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Scientists Set Sail to Unlock the Secrets of "Lost Continent" of Zealandia

 

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Scientists attempting to unlock the secrets of the "lost continent" of Zealandia,The vast underwater 'lost continent' of Zealandia extends from New Zealand north to New Caledonia and west towards the east coast of Australia, set sail Friday to investigate the huge underwater landmass east of Australia that has never been properly studied. Zealandia, which is mostly submerged beneath the South Pacific, was once part of the Gondwana super-continent but broke away some 75 million years ago.

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China Space Program Bound for Mars --"Creating First 'Mars Village' Simulation Base on Earth"

 

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China is set to build its first simulation Mars base. The "Mars Village", will be built in the northeastern section of Qinghai-Tibet plateau, with its landscape of Qaidam Basin consists of vast, arid desert --an ideal place to replicate Mars-like environment.

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NASA to Test Earth Defense Observatory & Systems During Asteroid Flyby

 

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"This is the perfect target for such an exercise because while we know the orbit of 2012 TC4 well enough to be absolutely certain it will not impact Earth, we haven't established its exact path just yet," said Paul Chodas, manager of NASA's Center for Near-Earth Object Studies (CNEOS) at the Jet Propulsion Laboratory in the US. "It will be incumbent upon the observatories to get a fix on the asteroid as it approaches, and work together to obtain follow-up observations than make more refined asteroid orbit determinations possible."

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The Next Darwin? MIT Physicist Proposes Mechanism Underlying the Origin of Life --"Order Can Arise from Nothing" (WATCH Today's 'Galaxy' Stream)

 

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"Take chemistry, add energy, get life." The first tests of MIT's Jeremy England’s provocative origin-of-life hypothesis show how order can arise from nothing. A prodigy who joined on the physics faculty at MIT at 29, England sees the essence of living things as the exceptional arrangement of their component atoms.

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On Saturn's Titan --"NASA Scientists Find a Chemical Capable of Forming Cell Membrane"

 

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"The detection of this elusive, astrobiologically relevant chemical is exciting for scientists who are eager to determine if life could develop on icy worlds such as Titan," said Goddard scientist Martin Cordiner, senior author on the paper. "This finding adds an important piece to our understanding of the chemical complexity of the solar system."

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Signal from the First Moon Beyond Our Solar System Detected by NASA's Kepler Mission --"An Exciting New Frontier in the Search for Life"

 

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A team of astronomers has potentially discovered a signal detected by Nasa's Kepler Space Telescope from Kepler moon-1625b I orbiting around a a G-type star that lies some 4,000 light-years from Earth. This is the first known moon beyond the Solar System that appears to be about the size and mass of Neptune that circles Kepler planet Kepler-1625, a gas giant exoplanet that takes 287.38 days to complete one orbit of its star. To date, these extrasolar satellites have lingered at the limits of detection with current techniques.

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China Recreating the Cosmos With World's Most Powerful Supercomputer --"Will Assist the New Giant FAST Radio Telescope in Search for Alien Life"

 

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Chinese scientists create biggest virtual universe with world’s fastest computer, dwarfed Switzerland’s record set only last month, will help researchers in their efforts to unlock the secrets of the cosmos. China experts said that China was learning to take full advantage of its raw calculation power, which had outpaced other nations in recent years, and recreating the universe was just the first step.

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Our Origins are From Galaxies Up to One Million Light Years Beyond Milky Way -- "We are Extragalactic Immigrants"

 

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"Given how much of the matter out of which we formed may have come from other galaxies, we could consider ourselves space travelers or extragalactic immigrants,” said Daniel Anglés-Alcázar, a postdoctoral fellow in Northwestern’s astrophysics center, CIERA (Center for Interdisciplinary Exploration and Research in Astrophysics). “It is likely that much of the Milky Way’s matter was in other galaxies before it was kicked out by a powerful wind, traveled across intergalactic space and eventually found its new home in the Milky Way.”

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